etex-pkg – E-TeX support package

The pack­age pro­vides sup­port for LaTeX doc­u­ments to use many
of the ex­ten­sions of­fered by e-TeX; in par­tic­u­lar, it mod­i­fies
LaTeX’s reg­is­ter al­lo­ca­tion macros to make use of the
ex­tended reg­is­ter range.

The etex­tools pack­age pro­vides
macros that make more so­phis­ti­cated use of e-TeX’s fa­cil­i­ties.